——————————–2. Two trains running in the opposite directions crosses a man standing on a platform in 27 seconds and 17 seconds respectively and crosses each other in 23 seconds. The ratio of their speeds is ?

SOLUTION: Distance = Speed * Time

Let the speeds of the two trains be x m/sec and y m/sech respectively. Then the length of the first train = 27x meters and the second train will be 17y meters.